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Hubble Space Telescope
WFPC2 TIR Abstract

WFPC2 Technical Instrument Report 02-02:

SMOV3B Flat Field Verification

-A. M. Koekemoer and I. Heyer

We compare WFPC2 Earthflats taken before and after the 2002 Servicing Mission 3B. Most of the field-of-view shows no change (<0.3%) in flat field calibration. The only changes on large scales are at very low levels (<0.1-0.2%) and are likely attributable to long-term changes in the camera geometry, rather than SM3B.

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